I could devise you could devise he could devise we could devise you could devise they could devise
Forma con V-ing
I could be devising you could be devising he could be devising we could be devising you could be devising they could be devising
Perfecto
I could have devised you could have devised he could have devised we could have devised you could have devised they could have devised
Perfecto con V-ing
I could have been devising you could have been devising he could have been devising we could have been devising you could have been devising they could have been devising
Negación
Forma simple
I could not devise you could not devise he could not devise we could not devise you could not devise they could not devise
Forma con V-ing
I could not be devising you could not be devising he could not be devising we could not be devising you could not be devising they could not be devising
Perfecto
I could not have devised you could not have devised he could not have devised we could not have devised you could not have devised they could not have devised
Perfecto con V-ing
I could not have been devising you could not have been devising he could not have been devising we could not have been devising you could not have been devising they could not have been devising
Forma interrogativa
Forma simple
could I devise? could you devise? could he devise? could we devise? could you devise? could they devise?
Forma con V-ing
could I be devising? could you be devising? could he be devising? could we be devising? could you be devising? could they be devising?
Perfecto
could I have devised? could you have devised? could he have devised? could we have devised? could you have devised? could they have devised?
Perfecto con V-ing
could I have been devising? could you have been devising? could he have been devising? could we have been devising? could you have been devising? could they have been devising?
Forma interro-negativa
Forma simple
could I not devise? could you not devise? could he not devise? could we not devise? could you not devise? could they not devise?
Forma con V-ing
could I not be devising? could you not be devising? could he not be devising? could we not be devising? could you not be devising? could they not be devising?
Perfecto
could I not have devised? could you not have devised? could he not have devised? could we not have devised? could you not have devised? could they not have devised?
Perfecto con V-ing
could I not have been devising? could you not have been devising? could he not have been devising? could we not have been devising? could you not have been devising? could they not have been devising?